Dental appliance



FIG. 1 is a top and side perspective view of the top piece of the dental appliance;

FIG. 2 is a top view of the top piece of the dental appliance;

FIG. 3 is a bottom view of the top piece of the dental appliance;

FIG. 4 is a side view of the top piece of the dental appliance, the reverse side being a mirror image thereof;

FIG. 5 is a bottom side view of the top piece of the dental appliance;

FIG. 6 is a front side view of the top piece of the dental appliance; and,

FIG. 7 is a back side view of the top piece of the dental appliance.

The broken lines are included for the purpose of illustrating portions of the dental appliance and form no part of the claimed design. 

CLAIM The ornamental design for the dental appliance, as shown and described. 